CN213020930U - Tunnel kiln with uniform temperature field - Google Patents
Tunnel kiln with uniform temperature field Download PDFInfo
- Publication number
- CN213020930U CN213020930U CN202021213497.2U CN202021213497U CN213020930U CN 213020930 U CN213020930 U CN 213020930U CN 202021213497 U CN202021213497 U CN 202021213497U CN 213020930 U CN213020930 U CN 213020930U
- Authority
- CN
- China
- Prior art keywords
- kiln
- side wall
- cavity
- nozzle
- heat insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Tunnel Furnaces (AREA)
Abstract
The utility model discloses a tunnel kiln with a uniform temperature field, which comprises side walls, a kiln top and a kiln base, wherein the side walls on two sides are built on the kiln base, and the kiln top is built on the top of the side walls on two sides; the side walls on two sides, the kiln base and the kiln top are enclosed to form a kiln cavity, the top of the kiln cavity is provided with a vault, two ends of the vault are respectively supported on the corresponding side walls, a kiln top heat insulation cavity is arranged between the vault and the kiln top, and the kiln top heat insulation cavity is filled with silica aerogel; a side wall heat insulation cavity is arranged in the wall of the side wall along the vertical direction, and a silicon dioxide condensation cavity is filled in the side wall heat insulation cavity; the burner center line that is located same cross-section and faces upward spout the nozzle, the nozzle that evenly spouts and bow and spout the nozzle intersects in the kiln intracavity with a bit along wall direction of height looks interval ground on the side wall. The tunnel kiln has the advantages that the heat insulation performance of the kiln body is good, the temperature in the kiln cavity is uniformly distributed, the energy loss can be effectively reduced, and the product quality is stabilized.
Description
Technical Field
The utility model relates to an industrial furnace especially relates to a tunnel cave with multiseriate gas burner nozzle.
Background
The tunnel kiln is a continuous firing thermal equipment, the main structure of the tunnel kiln is a tunnel structure with two side walls and a kiln top, a track for the running of a kiln car is laid at the bottom in the kiln, a row of gas burner nozzles are arranged on the side walls on the two sides along the length direction, and a product to be fired is loaded on the kiln car and enters the kiln cavity of the tunnel kiln for firing.
With the continuous growth of modern enterprises, the production yield of the tunnel kiln is required to be larger and larger, and the space of the kiln cavity of the tunnel kiln is increased in a heightening and widening mode. Because the burning flame of the burner of the existing tunnel kiln is sprayed out along the horizontal direction, the high-temperature atmosphere at the upper part and the lower part is not uniform due to the different heights of the cross section of the tunnel kiln, and particularly, the temperature difference and the gas distribution of the tunnel kiln with compact product loading are not uniform and more obvious. The common method is to increase the fire power of the burner and the high-temperature heat preservation time, thus not only prolonging the whole burning period and increasing the burning cost, but also increasing the energy consumption and greatly increasing the smoke discharge load. The energy consumption of the tunnel kiln is mainly the kiln body structure and the products to be fired on the kiln car, and the heat insulation and heat resistance performance and the sealing performance of the kiln body can directly influence and increase the heat loss of the tunnel kiln, thereby causing the waste of heat energy resources.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that prior art exists, the utility model aims to solve the technical problem that a tunnel cave with even temperature field is provided, not only the kiln body thermal insulation performance is good, and kiln intracavity temperature distribution equipartition can effectively reduce the energy loss moreover, stabilizes product quality.
In order to solve the technical problem, the tunnel kiln with the uniform temperature field comprises side walls, a kiln top and a kiln base, wherein the side walls on two sides are built on the kiln base, and the kiln top is built on the top of the side walls on two sides; the side walls on two sides, the kiln base and the kiln top are enclosed to form a kiln cavity, a movable kiln car is arranged in the kiln cavity, the top of the kiln cavity is provided with a vault, two ends of the vault are respectively supported on the corresponding side walls, a kiln top heat insulation cavity is arranged between the vault and the kiln top, and silica aerogel is filled in the kiln top heat insulation cavity; a side wall heat insulation cavity is arranged in the wall of the side wall along the vertical direction, and a silicon dioxide condensation cavity is filled in the side wall heat insulation cavity; the burner center line that is located same cross-section and faces upward spout the nozzle, the nozzle that evenly spouts and bow and spout the nozzle intersects in the kiln intracavity with a bit along wall direction of height looks interval ground on the side wall.
In the structure, because the kiln top heat insulation cavity is arranged between the vault and the kiln top, the side wall heat insulation cavity is also arranged in the side wall, and the heat insulation cavity is filled with silica gel, the outward diffusion of the heat energy in the kiln cavity is effectively blocked by utilizing the high heat insulation performance formed by the unique low density and high hole modulation rate of the silica gel; simultaneously the utility model discloses both sides side wall, kiln crown and kiln seat have constituted annular enclosed construction, also reduce the diffusion that leaks of kiln chamber heat energy effectively, form splendid thermal insulation kiln body major structure, have effectively reduced the heat loss of kiln chamber, have improved heat utilization rate. And because the upward-spraying nozzles, the horizontal-spraying nozzles and the downward-spraying nozzles are arranged on the wall of the side wall at intervals, the central lines of the nozzles are intersected at the same point in the kiln cavity, the nozzles are positioned at different positions and have different spraying angles, the sprayed high-temperature smoke forms a vertically mixed flow, the up-and-down smoke in the kiln cavity of the tunnel kiln is stirred, the laminar flow and the dead angle of the smoke flow in the kiln cavity are avoided, the problem of uneven distribution of the high-temperature smoke at each position in the kiln body is effectively solved, a uniform high-temperature field is formed in the kiln cavity, the firing time of products is effectively shortened, and the product qualification rate is improved. Therefore, the utility model discloses a kiln body structure, not only the thermal efficiency is high, effectively blocks the loss of kiln chamber heat energy, and kiln chamber calcining temperature is even moreover, stabilizes product quality effectively.
The utility model discloses a preferred embodiment all is provided with on the side wall that is located both sides and faces upward spout the nozzle, the flat nozzle and bow and spout the nozzle, and the side wall of both sides is on same cross-section face upward spout the nozzle, the flat nozzle and bow the nozzle central line that spouts the nozzle and intersect in the kiln intracavity has the same point, and this intersection is located the central point in kiln chamber and puts. The stirring action of the high-temperature flue gas is violent, so that a more uniform temperature field is formed in the kiln cavity.
In a further embodiment of the present invention, the dome is constructed of firebricks to form a dome-shaped top surface. And the outer side surfaces of the side wall and the kiln top are coated with a steel kiln shell. So that the tunnel kiln forms a stable integral structure.
Drawings
The tunnel kiln with uniform temperature field according to the present invention will be described in further detail with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic cross-sectional view of one embodiment of the tunnel kiln with a uniform temperature field according to the present invention.
In the figure, 1-side wall, 2-side wall heat insulation cavity, 3-upward spray burner, 4-horizontal spray burner, 5-downward spray burner, 6-kiln top, 7-kiln top heat insulation cavity, 8-vault, 9-kiln cavity, 10-kiln car, 11-kiln base and 12-kiln shell.
Detailed Description
As shown in fig. 1, the tunnel kiln with a uniform temperature field comprises side walls 1, a kiln top 6 and a kiln base 11 which are arranged at two sides, wherein the side walls 1, the kiln top 6 and the kiln base 11 at the two sides enclose a kiln cavity 9 for accommodating a calcined product and a kiln car. The side walls 1 on two sides are built on the kiln base 11, the top ends of the side walls 1 are built with the kiln roof 6, and the side walls 1 and the kiln roof 6 are both built with heat-insulating refractory bricks. The bottom of the kiln chamber 9 is provided with a movable kiln car 10, the kiln car 10 comprises a car frame and a car face masonry part, and the car frame part of the kiln car 10 is movably supported on a kiln seat 11. The outer side surfaces of the side walls 1 and the outer side surfaces of the kiln tops 6 of the tunnel kiln are coated with kiln shells 12, and the kiln shells 12 are made of carbon steel plates.
The top of the kiln cavity 9 is provided with a vault 8, two ends of the vault 8 are respectively supported on the side walls 1 at the corresponding ends, and the vault 8 is built into a circular arch-shaped top surface by refractory bricks; a kiln top heat insulation cavity 7 is formed between the vault 8 and the kiln top 6, and silica aerogel is filled in the cavity of the kiln top heat insulation cavity 7. The side wall 1 on two sides is provided with a side wall heat insulation cavity 2 in the wall along the vertical direction, and the side wall heat insulation cavity 2 is filled with silica aerogel. The silica aerogel in the kiln top heat insulation cavity 7 and the side wall heat insulation cavity 2 effectively blocks the leakage loss of the heat energy of the kiln cavity.
Three rows of burner nozzles are arranged on the side wall 1 of each side, wherein one row is a downward-spraying nozzle 3, the other row is a horizontal-spraying nozzle 4, and the other row is a downward-spraying nozzle 5. It spouts nozzle 3, flat nozzle 4 and the nozzle 5 that bows and has different burning flame and spray the direction, it spouts nozzle 3, flat nozzle 4 and the nozzle 5 that bows and all adopts general burner tip structure to face upward spout nozzle. All be provided with on the side wall 1 of both sides and face upward spout nozzle 3, the nozzle 4 and bow to spout nozzle 5, face upward on the same cross section of both sides side wall and spout nozzle 3, the nozzle central line that spouts nozzle 4 and the nozzle 5 that bows and just cross the same point in kiln 9, this point should be located the central line position in kiln chamber.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made to the present invention without departing from the spirit and scope of the invention.
Claims (4)
1. A tunnel kiln with a uniform temperature field comprises side walls (1), a kiln top (6) and a kiln base (11), wherein the side walls (1) on two sides are built on the kiln base (11), and the kiln top (6) is built on the tops of the side walls (1) on two sides; the side wall (1), the kiln seat (11) and the kiln top (6) of both sides enclose into kiln chamber (9), are provided with mobilizable kiln car (10), its characterized in that in kiln chamber (9): the top of the kiln cavity (9) is provided with a vault (8), two ends of the vault (8) are respectively supported on the corresponding side walls (1), a kiln top heat insulation cavity (7) is arranged between the vault (8) and the kiln top (6), and the kiln top heat insulation cavity (7) is filled with silica aerogel; a side wall heat insulation cavity (2) is arranged in the wall of the side wall (1) along the vertical direction, and a silicon dioxide condensation cavity is filled in the side wall heat insulation cavity (2); side wall (1) is gone up and is equipped with along wall direction of height looks interval and face upward spout nozzle (3), flat spout nozzle (4) and bow and spout nozzle (5), lies in the nozzle central line that faces upward spout nozzle (3), flat spout nozzle (4) and bow and spout nozzle (5) on same cross-section and crosses in kiln chamber (9) same point.
2. The tunnel kiln having a uniform temperature field according to claim 1, wherein: all be provided with on side wall (1) that is located both sides and face upward spout nozzle (3), spout nozzle (4) and bow and spout nozzle (5), the nozzle central line that side wall (1) of both sides was on same cross-section face upward spout nozzle (3), spout nozzle (4) and are bent and spout nozzle (5) intersects in same point in kiln chamber (9), and this intersection is located the central point of kiln chamber (9) and puts.
3. The tunnel kiln having a uniform temperature field according to claim 1, wherein: the arch crown (8) is built by refractory bricks into a circular arch-shaped top surface.
4. The tunnel kiln having a uniform temperature field according to claim 1, wherein: and the outer side surfaces of the side wall (1) and the kiln top (6) are coated with a steel kiln shell (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213497.2U CN213020930U (en) | 2020-06-28 | 2020-06-28 | Tunnel kiln with uniform temperature field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021213497.2U CN213020930U (en) | 2020-06-28 | 2020-06-28 | Tunnel kiln with uniform temperature field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213020930U true CN213020930U (en) | 2021-04-20 |
Family
ID=75499795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021213497.2U Active CN213020930U (en) | 2020-06-28 | 2020-06-28 | Tunnel kiln with uniform temperature field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213020930U (en) |
-
2020
- 2020-06-28 CN CN202021213497.2U patent/CN213020930U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20160230991A1 (en) | Alternate-switching regenerative combustion apparatus and control method therefor | |
| CN201942616U (en) | Internal combustion and beam type vertical lime kiln | |
| CN108603660A (en) | Novel top combustion hot stove | |
| CN213020930U (en) | Tunnel kiln with uniform temperature field | |
| CN213020931U (en) | Heat insulation brick tunnel kiln | |
| CN201245671Y (en) | Novel catenary dome ceramic combusting device hot-air furnace | |
| CN217600641U (en) | Vertical flame path structure of combustion chamber with low nitrogen emission | |
| CN201501894U (en) | Top combustion stove with jet nozzles which are in staggered arrangement for rotary jetting and precombustion chamber | |
| CN215372477U (en) | Staged combustion paired independent combined type ultralow NOx double-heat-storage burner | |
| CN214193016U (en) | Kiln for producing high-temperature glass | |
| CN212334991U (en) | Glass kiln | |
| CN211233937U (en) | Energy-saving heat-insulating transverse wall of carbon roasting furnace | |
| CN210237665U (en) | Ceramic body high-temperature hot blast stove with heat exchange chamber | |
| CN212618305U (en) | Natural gas single heat storage burner | |
| CN102747177B (en) | Blast furnace hot blast stove and construction method thereof | |
| CN101398259B (en) | Bottom flue gas passage structure of electrode calcination furnace with cap | |
| CN2344405Y (en) | Oven body of coke-oven | |
| CN2326371Y (en) | Wide spherical sponge iron tunnel kiln | |
| CN201129732Y (en) | Calcine furnace bottom flue gas duct structure with cap electrode | |
| CN211367661U (en) | Super-thick steel plate heat treatment chamber type furnace | |
| CN201801536U (en) | High-efficiency checker brick hot-blast stove modified from internal combustion type into vertical top combustion type | |
| CN201443761U (en) | Multiple-jet burner of industrial kiln | |
| CN115449377B (en) | Electric heating coke oven | |
| CN210237664U (en) | Ceramic body high-temperature hot blast stove capable of directly burning for heat exchange | |
| CN221666621U (en) | Novel airtight large brick for lining of submerged arc furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |